Simpsonite R050629

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Record 1 of 2  

Name: Simpsonite
RRUFF ID: R050629
Ideal Chemistry: Al4Ta3O13(OH)
Locality: Equador, Rio Grande do Norte, Brazil
Source: Gemological Center
Owner: RRUFF
Description: Yellow fragment
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Quick search: [ All Simpsonite samples (2) ]
CHEMISTRY 
RRUFF ID: R050629.2
Sample Description: Microprobe Fragment
Measured Chemistry: Al4.00(Ta2.93Nb0.07)Σ=3O13(OH)
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R050629
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
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Raman Data (Processed)
RRUFF File
Raman Data (RAW) View Graph
RRUFF File
INFRARED SPECTRUM (Attenuated Total Reflectance) 
RRUFF ID: R050629.1
Instrument settings: SensIR Durascope on a Nicolet Magna 860 FTIR
Resolution:
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Infrared Data (Processed)
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POWDER DIFFRACTION 
RRUFF ID: R050629.1
Sample Description: Powder
Cell Refinement Output: a: 7.3838(3)Å    b: 7.3838(3)Å    c: 4.5146(2)Å
alpha: 90.°    beta: 90.°    gamma: 120.°   Volume: 213.16(1)Å3    Crystal System: hexagonal
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Calculated diffraction file.

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Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

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Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

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Cell Refinement Data
Cell Refinement Output Data
DIF File
X-ray Data (XY - Processed)
RRUFF File
X-ray Data (XY - RAW) View Graph
RRUFF File
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REFERENCES for Simpsonite

American Mineralogist Crystal Structure Database Record: [view record]

Anthony J W, Bideaux R A, Bladh K W, and Nichols M C (1990) Handbook of Mineralogy, Mineral Data Publishing, Tucson Arizona, USA, by permission of the Mineralogical Society of America. [view file]

Bowley H (1938) Simpsonite, Report of the Department of Mines Western Australia, 93, 88-88   [view file]

Taylor L E R (1939) X-ray studies of simpsonite, Journal of the Royal Society of Western Australia, 25, 93-97   [view file]

Foshag W F (1940) New mineral names, American Mineralogist, 25, 312-314   [view file]

Fleischer M (1945) New mineral names, American Mineralogist, 30, 548-550   [view file]

Kerr P F, Holmes R J (1945) X-ray study of the tantalum mineral simpsonite, Bulletin of the Geological Society of America, 56, 479-504   [view file]

Ercit T S, Černý P, Hawthorne F C (1992) The crystal chemistry of simpsonite, The Canadian Mineralogist, 30, 663-671   [view file]